逍遥学能 2013-05-10 17:26
6×40
=4×21
=80÷4
=24÷2
=22÷2
=31×3
=43×2
=4×11
= 270÷3= 300÷3= 270÷9= 320÷8= 8×40 = 43×0 = 10×40= 606÷6= 40×5= 11×50 = 25×10 = 12×40 40×30 = 180÷9= 0÷8= 40×9 = 2.1+3.5= 6.7-3.4= 7.5+2.4= 9.8-9.5= 149÷5≈ 49×11≈ 18×32≈ 122÷4≈ 二、竖式计算(每题3分,共36分) 309÷3= 238÷6= 604÷2= 534÷3= 429÷3= 185÷5= 980÷7= 543÷3=33×22= 83×26= 26×47= 19×36=